Vaughn Silar Jr., founding principal of Paragon Engineering Services Inc., is stepping down as president and CEO this week. He will be succeeded in the role by COO Pete Shovlin.

Since 1955, T&W Traffic Control has decorated midstate streets and highways in orange, yellow and white.

Canadian engineering giant WSP Global has acquired Leach Wallace Associates, which has an office in York Township, for an undisclosed sum.

Timothy Miller, 55, joined Enola-based Dawood Engineering as director of energy services in June 2018. He has more than 30 years of experience in the field, most recently serving as director of oil and gas Appalachian Basin water management services for a large international engineering consulting firm.

Michelle Brummer, 47, is a project manager and senior environmental planner for Camp Hill-based Gannett Fleming and has been with the company since 2001.

Gannett Fleming Inc. has purchased a California engineering firm, the Cumberland County company's fourth deal in the last seven months.